John Warren may refer to:

Entertainment

  • John F. Warren (1909–2000), American cinematographer
  • John Warren (actor) (1916–1977), British screenwriter and actor
  • John Warren (musician) (born 1938), Canadian baritone saxophonist and composer

Medicine

  • John Warren (surgeon, born 1753) (1753–1815), American surgeon during the Revolutionary War, founder of Harvard Medical School
  • John Collins Warren (surgeon, born 1778) (1778–1856), American surgeon, founder of the New England Journal of Medicine, son of the above
  • John Collins Warren (surgeon, born 1842) (1842–1927), American surgeon, son of Jonathan Mason Warren
  • John Warren (anatomist, born 1874) (1874–1928), American professor of anatomy at Harvard University, son of the above
  • Robin Warren (John Robin Warren, 1937–2024), Australian pathologist

Military

  • Sir John Borlase Warren (1753–1822), British admiral, politician, and diplomat
  • Sir John Borlase Warren (1800 ship), British merchant vessel named after the admiral
  • Jean Baptiste François Joseph de Warren (1769–1830), known as John Warren, Italian-born British Army officer and surveyor and astronomer with the East India Company
  • John Warren (British Army soldier) (died 1813), soldier, official and merchant in Upper Canada
  • John E. Warren Jr. (1946–1969), U.S. Army officer and Vietnam War Medal of Honor recipient

Politics

  • John Warren (Dover MP) (died 1547), English member of Parliament for Dover
  • John Warren (Upper Canada politician) (died 1832), merchant and politician in Upper Canada
  • John Henry Warren (c. 1812–1885), English-born merchant and politician in Newfoundland
  • John Holden Warren (1825–1901), Wisconsin state senator
  • John Warren (Australian politician) (1830–1914), Australian pastoralist and politician
  • John E. Warren, Mayor of Saint Paul, Minnesota, from 1863 to 1864
  • John Warren (Georgia politician) (fl. 1868), Georgia state representative
  • John Warren (trade unionist) (1895–1960), British trade unionist

Religion

  • John Warren (bishop) (1730–1800), Archdeacon of Worcester, Bishop of Saint David's, Wales, Bishop of Bangor, Wales
  • John Warren (priest) (1767–1838), Dean of Bangor

Science and engineering

  • John Warren (mathematician) (1796–1852), English mathematician and Fellow of the Royal Society
  • John Warren (mining engineer) (c. 1837–1910), English-born mining engineer and mine manager in Australia

Sports

  • John Warren (South African cricketer) (1873–1900), South African cricketer
  • John A. Warren (1904–1981), American football and basketball coach at the University of Oregon
  • John Warren (Indian cricketer) (fl. 1935–1936), Indian cricketer who played for Bengal
  • John Warren (basketball, born 1947) (born 1947), American basketball player
  • Johnny Warren (1943–2004), Australian soccer player and coach
  • John Warren (punter) (born 1960), American football player
  • John Warren (born 1960), racing manager of Queen Elizabeth's horses

Others

  • John Warren (convict) (c. 1826–1898), British convict transported to Western Australia
  • John Warren, 3rd Baron de Tabley (1835–1895), English poet, numismatist, botanist and authority on bookplates
  • John Warren (journalist) (born 1937), Canadian journalist who anchored the CBC Parliamentary Television Network

See also

  • Jonathan Mason Warren (1811–1867), American surgeon, pioneer of plastic and reconstructive surgery, son of John Collins Warren